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Collection of pages from K&E catalogs for the 4020 Charpentier's Pocket Calculator

Description:

The Charpentier's Pocket Calculator was marketed by K&E but was manufactured in France

The following K&E model numbers are part of the 4020 family:

• 1743 ------ Charpentier's Pocket Calculator
• 4020 ------ Charpentier's Pocket Calculator

History:

The following is a list of catalog entries from 1901 to 1931. It is not know why but the 4020 was not shown in the soft bound 1913 and 1922 catalogs.

• 1895 -- The 1743 was introduced.
• 1901 -- The 4020 model was introduced replacing the1743 model.
• 1913b - The 4020 was not shown in the soft bound version of the 1913 catalog.
• 1922 -- The 4020 was not shown in the soft bound 1922 catalog.
• 1932 -- The 4020 was last shown in the 1932 soft bound catalog

Links to catalog pages for the 4020 family of slide rules:

• 1895 1897 1899 1901 1903 1906 1909 1913a 1915 1921
• 1925 1927a 1927b 1928 1930 1931 1932

Link to scans of Charpentier's Calculator

• 4020 Scans